Home / 78,915.44-118,374.24-44,076.80

Finding the Fourth Proportional to 78,915.44, 118,374.24 and 44,076.80

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Solution

The fourth proportional to 78,915.44, 118,374.24 and 44,076.80 is: 66,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,915.44 : 118,374.24 = 44,076.80 : x
  2. Step 2: Convert to fraction form
    78,915.44/118,374.24 = 44,076.80/x
  3. Step 3: Cross multiply
    78,915.44x = 118,374.24 × 44,076.80
  4. Step 4: Simplify right side
    78,915.44x = 5,217,557,701.63
  5. Step 5: Solve for x
    x = 5,217,557,701.63/78,915.44
  6. Step 6: Final answer
    x = 66,115.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.